New image cropped up on Eurobricks. Note the large Buzz (7592) and Zurg (7591) figures and Woody's Round-Up (7594) in the background and Buzz's ship (7593) along with an Army men jeep in the foreground.

Title says it all, LEGO Toy Story: 7594 Woody's Roundup was spotted on Toys'R'Us's website. I've stitched together the box image below. Set is priced at $50 USD. Click through for the flickr page where you can view the full size: